Steam-engine governor



(No Model.) 2 Sheets-Sheet 1.

W. MILLER & P. E. PREY.

STEAM ENGINE GOVERNOR. l

N0. 353,957. Patented D60. 7,1886.

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)JFW) I .dttorney 2 SheetsSheet 2.

(No Model.)

W. MILLERKz F. E. PREY.

STEAM ENGINE GOVERNOR.

No. 353,957. Patented Dec. 7, 1886.

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UNTTE STATES Tries,

WVALTER MILLER, OF CLEVELAND, AND FREDERICK E. FREY, OF BUOYRUS,

' OHIO.

STEAM-ENGINE. GOVERNOR.

' SPECIFICATION forming part; of Letters Patent No. 353,957. datedDecember 7, 1886.

Application filed October 'I, 1885. Serial No. 179,179. (No model.)

To all whom, it may concern:

'Be it known that we, XVALTER MILLER, of the city of Cleveland, in thecounty of Guyahoga, in the State of Ohio, and FREDERICK E. FREY, ofthetown of Bucyrus. in the county of Crawford. in the State of Ohio,citizens of the United States of America. have invented a new and usefulSteam Engine Valve, of which the following is a specification. Ourinvention has relation toimprovements in steanrenginegovernors otthatclass wherein the flow of steam to the piston-cylinders is controlled bythe automatic action of a governingvalve by the governor; and the objectis to provide a certain, sate, and simple valve for controlling andregulating the flow of steam to the piston cylinder of the engine whichis applicable to steam-engines of any class, marine, portable, orstationary.

Our invention consists in the novel arrangement and combination ofparts. as hereinafter described, and especially asspecifically pointedout in the claims hereto.

\Ve have fully illustrated our invention in the accompanying drawings,forming a part of this specification, and wherein Figure 1 is a sideview in elevation. Fig. 2 is a front elevation. Fig. 3 is a centralvertical view taken through the cylinder, steam-chest, and valves on theline as as of Fig. 2; and Fig. 4 isacrosssectional view taken on theline y y of Figs. 2 and 3.

In these illustrations likeparts of' the mech anism are identified bythe salneletters of reference.

The illustrations show our improvements arranged as applied to averticatacting steamengine, with the governor mountedon and over the endof the steam chest or valve-box.

The letter A designates the piston-cylinder, formed with steam channelsor ports a a, leading to the interior from the valve-seat, and alsohaving the usual exhaust-port, a". A Valve-seat, a is i'ornied' on theexterior of the cylinder. on which the mainvalveslides. Thecylindenshell is preferably cast integral with the base a and head a andprovided with the detachable head a. The lastaiamed may be cast togetherwith the cap to the steam or valve chest. The letter B designates thesteamchest,

which is cast to the cylinder with open end, and provided with apacking-box, b, for the valverod of the main valve. and also providedwith steam-pipe b and escape-pipe b*.

The letter O designates the main valve fitted to the interior of thesteam -chest and formed with steam channels a, to close and open withthe steam-channels in the cylinder. This valve is bored out in thecenter to form the seat for the governor-valve, as indicated at c. andis connected to the valve stem 0 which stem has its outer end connectedto the wristpin c on the gudgcon' d of the rockerarm.

The letter D designates brackets or hearingarms cast on thecylinder-frame, and formed with suitable bearings wherein are disposedthe gudgeons d d ot'the rocker-arms cl. These rocker-arms are extendedin both directions from their bearings d d, and at their outer or freeends are formed or bent to approach each other, substantially as shownin Fig. 4 of the drawings, and at their approaching ends are connectedby a crosspin, d, to which the mechanism to he moved is connect edsnchas the tiller of the vessel, the axle of the roadengine, the link, thereverse'lcver, or cam-rod of an engine. To the other ends of theserocker arms are pivotally connected the pit- Inen-rods at, having across-head, (1 in the middle of which is formed a bearing for thepiston-rod d", suitably connected to the piston d in the cylinder.

The letter E designates the governor-valve, fitted to the bore ot' -themain valve, which serves as its seat, and is formed with steamchannels 0e and central exhaust channel or port, e", each end 01' thegovernor-valve being cored out, substantially as shown, and the cen- 9ctral portion having a rod-hole through which the valvc-rod c is passedand secured in the valve.

The letter F designates the governor, which ishere shown as of a wellknown and approved 5 kind, having connections to the valve-rod of thevalve E, and actuated by connection with the power through the pulley fon shaft f, mounted in sleeve/hand carrying beveled gearwheel f whichmeshes with the bevel gearwheel f" on the governor stem or spindle.

Having thus described the construction of the machine and stat d therelation of the several parts, the operation may be given as follows:The steam being admitted from the boiler to the steam-chest through thesteampipe I), and thence to the cylinder, and movement to the enginecommunicated thereby and to the governor, the action is as follows: Themotion imparted to the governor throws the ballsoutward and moves downthe governorvalve within the main valve, and thus admits steam throughthe upper steam-channel into the'cylinder', throwing the pistondownward, which carries the pitmen with it and moves ther0'cker-arm,giving m otion to the gudgeons, to one of which thewrist-pin is eccentrically attached and connected to the valve-rod ofthe main valve. This action or movement draws downward the main valve inthe same ratio as the governor-valve is depressed. The result of thesemovements is that as the governor- Valve is moved downward it tends toopen the upper steam channel; but the movement being in the direction ofthe movement of the main valve the latter prevents the port from beingentirely opened.

The induction-ports of the main valve are made and arranged to admit thesteam at either end of the cylinder. Now, as the governor-valve moveswithin its seat just according as the force of the governor shalldepress it, the ports or steam channels are correspondingly opened orclosed, and the course of the steam thus regulated and maintained.

WVhat- We claim as our invention, and desire to secure by LettersPatent, is-

1. The combination, with a steaurcylinder and piston, ot' the pitnien(1, extending vertical l y parallel with and on opposite sides of thecylinder, and having the cross-head (1 connected to the end of thepiston-rod, and the rocker-arms d pivotally supported at their middle ongudgeons, having bearings on the steam-cylinder, and having one endpivotally connected to the pitmen, and the other end provided with across-pin to connect them with the resistance, substantially asdescribed.

2. In combination with the steam-cylinder and the steam-chest, having avalve-seat with steam-channels to the steam-cylinder, of the piston, thepitmen connected together and to the piston-rod by a cross-head, therockerarms, the wrist-pin eccentrically fixed to the gudgeon of one ofthe rocker-arms, and the main valve within the steam-chest, having itsvalve-rod connected to the wrist-pin of the rocker-arm, substantially asdescribed.

3. In combination with the steam-cylinder and the steam-chest, having avalve-seat with steam-channels to the steam-cylinder, the piston, thepitmen connected tovthe piston-rod,

the rocker-arms having gudgeons mounted on bearings on the cylinder, awrist-pin fixed to the gudgeon of one of the rocker-arms, the main valvewithin the steam-chest, connected to the wrist-pin of the gudgeon of therockerarm, and the governor-valve seated within the main valve and movedby the variable movements of the governor, substantially as described,and for the purpose stated.

7 4. In combination with the steam-cylinder YV ALTER MILLER. FREDERICKE. FREY.

Attest: A. L. BESWIOK, MARK W. NELSON.

